Octagonal wall clock



FIG. 1 is a perspective view of an octagonal wall clock showing my new design;

FIG. 2 is a front elevational view of the octagonal wall clock illustrated in FIG. 1; and,

FIG. 3 is a side elevational view of the octagonal wall clock illustrated in FIG. 1, all sides of the clock are mirror images of the side shown. 

The ornamental design for an octagonal wall clock, as shown and described. 